내도복 다수성 사료용 옥수수 단교잡 신품종 ‘다청옥’ = Single Cross Maize Hybrid for Silage with Lodging Tolerance and High Yield, ‘Dacheongok’

다국어 초록 (Multilingual Abstract)

‘Dacheongok’, a new maize F1 hybrid (Zea mays L.), is developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2016. The high-yielding hybrid, named ‘Dacheongok’ was bred by crossing between two inbred lines, ‘KS197’ and ‘KS202’. It is a yellow dent maize hybrid. After advanced yield trial of ‘Dacheongok’ in Suwon for one year, regional yield trial was subsequently carried out for evaluation of its growth and yield at four different locations from 2014 to 2016. The days to silking of ‘Dacheongok’ are 80, similar to ‘Kwangpyeongok’. The plant height of ‘Dacheongok’ is 267 cm, similar to ‘Kwangpyeongok’, and its ear height ratio is 51%, similar with that of ‘Kwangpyeongok’. It has resistance to lodging. The stay-green of ‘Dacheongok’ is not different with that of ‘Kwangpyeongok’. The number of ear per 100 plants of ‘Dacheongok’ is 95, similar to ‘Kwangpyeongok’. The ear length of ‘Dacheongok’ is 18.6 cm, longer than that of ‘Kwangpyeongok’. The weight of 100 seeds of ‘Dacheongok’ is 29.8 g, similar to that of ‘Kwangpyeongok’. It has moderate resistance to southern leaf blight (Bipolaris maydis). It has moderate resistance to European Corn Borer (Ostrinia nubilalis). The dry matter yield (23.69 ton/ha) of ‘Dacheongok’ was 10% higher than that of ‘Kwangpyeongok’. The TDN (Total Digestible Nutrients) yield (16.11 ton/ha) of ‘Dacheongok’ was 7% higher than that of ‘Kwangpyeongok’. The seed production of ‘Dacheongok’ was acceptable due to a good synchronization of flowering period during crossing between the seed parent, KS197, and the pollen parent, KS202, in Yeongwol and F1 seed yield was 2.46 ton/ha. ‘Dacheongok’ would be a suitable cultivar to all plain area in Korea. (Variety registration No. 7054)

참고문헌 (Reference)

1 손범영, "국내육성 사일리지옥수수의 일반생육특성 및 사료가치의 품종간 비교" 한국작물학회 51 (51): 233-238, 2006

2 Holland C, "The Pioneer forage manual : A nutritional guide" 1990

3 "Statistics Korea. Agriculture, Forestry and Fisheries"

4 Lee SS, "Productivity of silage corn hybrids in rice black-streaked dwarf virus prevalent region" 7 : 140-145, 1987

5 Lee SS, "Population of Laodelphax striatellus, percentage of rice black-streaked dwarf virus (RBSDV) viruliferous vector and RBSDV infection of maize in different locations" 33 : 74-80, 1988

6 Kim, DA, "Forage crops : its characteristics and cultivation mothed" Sunjinmunhwasa 167-198, 1986

7 Moon HG, "A new single cross hybrid for silage "Kwangpyeongok"" 33 : 350-351, 2001